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pt3_player: fix backward SMC code flip in the v3.6 portamento code

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this took a while to track down
This commit is contained in:
Vince Weaver 2019-09-11 00:26:03 -04:00
parent 9d6b22a0c2
commit a885eeb4a0
1 changed files with 14 additions and 15 deletions
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29
pt3_player/pt3_lib.s
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@ -592,10 +592,11 @@ not_ascii_number:
lda #$2C ; BIT ; 2
cpx #$6 ; 2
bcc version_less_than_6 ; blt ; 3
; carry is set
adc #$1F ; BIT->JMP 2C->4C ; 2
version_less_than_6:
bcs version_greater_than_or_equal_6 ; bgt ; 3
; less than 6, jump
; also carry is known to be clear
adc #$20 ; BIT->JMP 2C->4C ; 2
version_greater_than_or_equal_6:
sta version_smc ; 4
pick_volume_table:
@ -910,24 +911,22 @@ note_not_too_high:
clc
lda note_a+NOTE_TONE_SLIDING_L,X
adc note_a+NOTE_TONE_L,X
sta temp_word_l1_smc+1
lda note_a+NOTE_TONE_H,X
adc note_a+NOTE_TONE_SLIDING_H,X
sta temp_word_h1_smc+1
clc ;;can be removed if ADC SLIDING_H cannot overflow
temp_word_l1_smc:
lda #$d1
freq_l_smc:
;freq_l_smc:
; adc #$d1 ; GetNoteFreq
adc NoteTable_low,Y ; GetNoteFreq
sta note_a+NOTE_TONE_L,X
temp_word_h1_smc:
lda #$d1
freq_h_smc:
;freq_h_smc:
; adc #$d1 ; GetNoteFreq
adc NoteTable_high,Y
and #$0f
@ -949,7 +948,7 @@ freq_h_smc:
lda note_a+NOTE_TONE_SLIDING_L,X
adc note_a+NOTE_TONE_SLIDE_STEP_L,X
sta note_a+NOTE_TONE_SLIDING_L,X
tay
tay ; save NOTE_TONE_SLIDING_L in y
lda note_a+NOTE_TONE_SLIDING_H,X
adc note_a+NOTE_TONE_SLIDE_STEP_H,X
sta note_a+NOTE_TONE_SLIDING_H,X
@ -970,8 +969,8 @@ check1:
; (a->tone_sliding <= a->tone_delta) ||
; 16 bit signed compare
tya ; NUM1-NUM2
cmp note_a+NOTE_TONE_DELTA_L,X ;
tya ; y has NOTE_TONE_SLIDING_L
cmp note_a+NOTE_TONE_DELTA_L,X ; NUM1-NUM2
lda note_a+NOTE_TONE_SLIDING_H,X
sbc note_a+NOTE_TONE_DELTA_H,X
bvc sc_loser1 ; N eor V
@ -980,7 +979,7 @@ sc_loser1:
bmi slide_to_note ; then A (signed) < NUM (signed) and BMI will branch
; equals case
tya
tya ; y has NOTE_TONE_SLIDING_L
cmp note_a+NOTE_TONE_DELTA_L,X
bne check2
lda note_a+NOTE_TONE_SLIDING_H,X
@ -994,8 +993,8 @@ check2:
; (a->tone_sliding >= a->tone_delta)
; 16 bit signed compare
tya ; NUM1-NUM2
cmp note_a+NOTE_TONE_DELTA_L,X ;
tya ; y has NOTE_TONE_SLIDING_L
cmp note_a+NOTE_TONE_DELTA_L,X ; num1-num2
lda note_a+NOTE_TONE_SLIDING_H,X
sbc note_a+NOTE_TONE_DELTA_H,X
bvc sc_loser2 ; N eor V